Safety razor



Jan. 9, 1951 J. T. HELLMANN SAFETY RAZOR Filed March 17, 1947 INVENTOR.Y H51 .4 MA /v/v ATTD RN EYS Patented Jan. 9, 1951 UNITED STATES PATENTOFFICE SAFETY RAZOR Jay T. Hellmann, Chicago, Ill.

Application March 17, 1947, Serial No. 735,054

7 Claims. 1

This invention relates to improvements in safety razors, and the primaryobjects of the invention are to provide a safety razor of the type to belater described, that by a clamping pressure on the edge of the blade,will turn the edge of the blade slightly upward from the plane of theblade, guards on the ends of the razor to prevent cutting the shaversface during the shaving operation, and including means for suspendingthe razor blade in a separated anchored position from the remainder ofthe razor for the drying of the blade and the movable parts of therazor.

With the above and other objects and advantages in view, the inventionconsists of the novel details of construction, arrangement andcombination of parts more fully hereinafter described,

claimed and illustrated in the accompanying drawing in which:

Figure 1 is a vertical, sectional view of a razor embodying theinvention on the line of Figure 2 4 Figure 2 is an elevational Viewpartly in section of an edge of the razor;

Figure 3 is a sectional view on the line 3-3 of Figure 1;

Figure 4 is a, sectional view on the line 44 of Figure 1;

Figure 5 is a sectional view on the line 5-5 of Figure 1;

Figure 6 is an elevational view of the blade tension member;

Figure 7 is a bottom plan view of the guard and Figure 8 is a bottomplan view of the clamp member.

Referring more in detail to the drawing, the razor embodying theinvention is generally designated by the numeral ID. The razor isconstructed of fiveparts and comprises the tubular stem or handle ll,having an outer knurled periphery |2 which is internally threaded at oneend at l3 to receive the complementary threaded portion M of the tubularguard stem l5. The stem |5 has a threaded portion I6 at its upper endfor connection to the guard l1, and an annular shoulder 8 is formed onthe stem l5 below the portion l6, and the upper end of the stem isbevelled inwardly to form a hex shaped seat at l9, and is provided witha hex shaped bore to conform to the hex shaped stem 20 of the clamp 2|.The stem 20 is threaded at its lower end at 22 to engage in theinternally threaded bore 23 of the reduced portion 24 of the operatingscrew member 25 which is externally threaded at 26 to engage thecomplementary threaded portion 21 of the handle 1|, and a knurled knob28 on the end of the member 25 permits manipulation thereof, as will belater described.

Mounted on the portion 24 of the member 25 is the tubular portion 29 ofthe blade tensioning member 30 having instruck portions 3| which, bytheir springy nature, retain the member 30 on the member 25, yet permitturning of the member 25. The tubular portion 29 is provided with springarms 32 which are in opposed parallel relation to each other, and areprovided at their upper ends with right angularly disposed projections33 on which are formed in vertical relation thereto, the square shapedlugs 34 having square shaped shoulders 35 and oval shaped upper ends 36.Intermediate each of these shoulders 35 and the oval shaped upper ends36 an inwardly bevelled groove 36' is provided, which engages the razorblade 4| to prevent the razor blade from slipping off of the upper ends36.

The member 25 is threaded into the lower end of the handle I l, whichhas a smooth internal bore below the threaded portion 26, by acounterclockwise motion, and the portion 29' is slipped over the portion24 which is in alinement with the smooth bore 31 in the handle ll,intermediate the threads 26 and threads |3.

The stem I5 is then inserted into the handle I intermediate the arms 32,and the arms will be received in slots 38 formed on opposite sides ofthe stem. The stem is then moved downwardly until the projections 33 arereceived in the slots 39 formed in the lower surface of the guard I!which extends in opposite directions from the stem l5 thereof, and thelugs 34 will enter the complementary shaped openings 40 in the guard.

The hexagonal shaped stem 20 of the clamping member 2| is then insertedas previously de-- scribed, and drawn downwardly against the blade 4|.

The clamping member 2| is providedwith a curved upper surface 42, and afiat under surface 43, and the top surface extends beyond the undersurface to form the longitudinally extending tapered clamping edges 44extending downwardly at sharp angles with respect to the under surface43. These edges serve to clamp the blade 4| flatly over 80% of itssurface, which enables a second pressure to come on the blade by meansof the guard ridges 45 formed adjacent the guard teeth 46 which tends tobring the clamp pressure in a reverse manner on the blade at its veryedge, turning the edge of the blade upwardly. This leaves the blade edgeextending diagonally outwardly with respect to the under surface of theclamp plate 2|. Thus the blade is able to cut whiskers without theangling of the razor handle, and increases the cutting qualities of therazor.

The guard notches 41 at the extreme ends of the uard serve to house theextreme ends of the blade to avoid cutting of the face during theshaving operation, and also serve with the pressure of the edges M ofthe clamp plate to give extreme pressure to the blade at its very edge.The guard ridges 45 adjacent the notches 41 are onaslightly higher planethan the intermediate ridges, to give free cutting of the bladethroughout its entire length, with the edges thereof guarded ,to preventcutting of the skin.

The razor can be easily taken apart for cleaning, and when reassembledis in full operative position. To operate the razor, the handle! I istaken in the left hand and the-knob 28 is 'turned to the left with theright hand. A few turns will open the razor to a drying position withthe blade suspended and held tightly for the washing and drying thereof.Thus the blade need not be removed every timeJthe razor is used.

To replace the blade in the razor, :the knob 28 is turned as far aspossible to the left, at which time the clamp plate can be removed. Theblade is still anchored by the arms 32, and by pressing inwardly on thearms 32, the lugs 36 will be moved inwardly so the blade can be removed,andla new blade can be replaced. Then by turning the-knob 26 to theright, the razor is brought into closed position for use again.

If the razor is taken down entirely, the knob 28 is turned to the left,the clamp .plate is then removed and by turning the knob to the right,the screw member 25 will come out of thethandle H. By turningthe handleH -to=the leftjit'will comeioll of the guard. The spring arms 32 willslip from the guard by the inwardpressure thereon, andthe razor iscompletely broken down into its five coasting parts. The razorisreassembled in the reverse manner in which it was broken down. The razorwill use any :type of standard double edged blade and provides a'razor'having-a greater cutting efiiciency than any in useat the presenttime.

It is believed that'from the'foregoingdescription, the construction andoperationof "the in- :vention will be apparent to those skilled in theart, and it is to be understood :that changes in the minor details ofconstruction, arrangement andcombination ofparts maybe resorted'to,-.providedthey fall within the spirit of the invention and thescopeof the appendedclaims.

Having thus described the invention, whatis claimed as new and desiredtobe secured by Letters Patent is:

1. Ina razor having a tubular handle, which is internally threaded atits upper and :lower ends respectively, a screw member receivable in thelower end of said handle,-and engageable with the threads in the lowerend thereof, a'threaded bore in the upper end of said screw member, aguard member,-a tubular stem on saidguard member ,said spring memberdisposed on opposite sides 10' of said tubular stem innparallelrelationthereto said spring arms having outwardly bent portions carrying lugsthereon to engage and retain a blade thereon between said guard memberand said clamping plate.

v2. The improvements in a razor as in claim 1 wherein said guard memberis provided with teeth along its ilongitudinaI edges, ridges adjacentsaid teeth and the clamping plate is provided with longitudinallyextending ledges which are adapted to coact with said ridges to turn thelongitudinal edges of said blade upwardly with regard to thehorizontal-plane of the clamping plate.

3. Theimprovements in a razor as in claim 1 wherein said guard and saidclamping plate are provided-with openings to receive the'lugs on'thearms onsaid spring member.

4. The improvements in a razoras in claim 1, wherein said guard plate isprovided with slots to receive and house the spring arms on said springmember.

'5. Theimprovements in a razoras in claim '-1, wherein said-tubular stemis provided with ahex shaped bore .to receive the hex shaped stem onsaid clamping-plate, andthe outer surface of said tubular stem isprovided with slots to receive and house said spring member.

6. The improvements in a razor as in claiml, wherein the said clampingplate is provided with a'fiat undersurface having longitudinallyextending downwardly tapered edges which engages the blade on itsupper-surface and guard-ridges are provided on the upper surface of saidguard member to ooact with the taperededges on said clamping plate tocreate cross pressure means for doi'ible-orreverse blade pressure.

7. The invention as in claim 1, wherein said spring member is providedwith a tubular portion having instruck spring portions to provide aslidable .tensioned mounting on said screw member, and inwardly beveledgrooves .are provided on said lugs adapted to prevent a blade fromslipping off of said lugs.

JAY T. HELLMANN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number 'Name Date 1,496,296 Chance June .3, 19241,562,445 Gaisman, Nov. 24, 1925

